C6361-22-ENG - Feb 2023 - V1

Australian Government

os =
oie mem Cocceae

 

Location

Label: Pomona
Latitude: -26.371 [Nearest grid cell: 26.3625 (S)]
Longitude:152.8505 [Nearest grid cell: 152.8625 (E)]

Very Frequent Design Rainfall Intensity (mm/h) Issued: 19 May 2022

Rainfall intensity for Durations, Exceedance per Year (EY), and Annual Exceedance Probabilities (AEP).
FAQ for New ARR probability terminology

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Exceedance per Year (EY)
Duration 12EY 6EY 4EY 3EY 2EY 1EY O.5EY# | 0.2EY*
68.7 78.6 95.7 108 125 155 195 241
59.0 67.1 81.1 91.1 105 130 163 203
54.6 62.5 76.0 85.7 99.3 123 153 191
51.2 58.9 72.2 81.5 94.8 117 147 183
48.3 55.8 68.7 77.8 90.6 112 141 175
41.5 48.3 60.1 68.3 79.9 99.5 125 154
39.6 46.3 57.6 65.6 76.8 95.8 120 149
38.0 44.4 55.4 63.1 74.0 92.3 116 143
33.8 39.7 49.6 56.7 66.6 83.3 104 129
31.6 37.1 46.5 53.1 62.4 78.3 98.1 121
28.0 32.9 41.3 47.2 55.7 70.0 87.7 108
27.2 32.0 40.2 46.0 54.2 68.3 85.5 106
24.0 28.2 35.5 40.7 48.1 60.7 76.1 94.1
21.6 25.4 31.9 36.6 43.3 54.9 68.7 85.1
16.8 19.7 24.8 28.5 33.8 43.2 54.1 67.2
13.9 16.3 20.6 23.7 28.1 36.1 45.2 56.5
1.5 hour 10.6 12.4 15.7 18.1 21.6 27.9 35.0 44.0
2 hour 8.68 10.2 12.9 14.9 17.8 23.2 29.1 36.9
3 hour 6.59 7.74 9.81 11.4 13.7 17.9 22.6 28.9
4.5 hour 5.01 5.90 7.51 8.71 10.5 13.9 17.6 22.8
6 hour 4.14 4.88 6.23 7.25 8.77 11.7 14.9 19.4
9 hour 3.18 3.76 4.81 5.61 6.82 9.13 11.7 15.5
12 hour 2.65 3.13 4.02 4.69 5.72 7.69 9.92 13.2
18 hour 2.04 2.42 3.11 3.64 4.45 6.03 7.82 10.6

 

 

 

 

 

 

 

 

 

 

 

Note:

# The 0.5 EY design rainfall corresponds to the 2 year Average Recurrence Interval (ARI) IFD not the
50% AEP IFD.

* The 0.2 EY design rainfall corresponds to the 5 year Average Recurrence Interval (ARI) IFD not the
20% AEP IFD.